The northernmost species of Diglossa, the Cinnamon-bellied Flowerpiercer is a distinctive species, being the only flowerpiercer over the vast majority of its distribution. It inhabits the montane pine-oak, cypress, and fir forests of the highlands (1500-3300 m) of northern Central America, from southern Mexico to northern Nicaragua. It also occurs on the edges of forests, in clearings, and in previously cultivated areas; wherever blooms proliferate, this perky nectar robber will find them. Male Cinnamon-bellied Flowerpiercers are blue-gray above and over the head and breast, with the rest of the underparts chestnut-colored, and possess a strikingly pale base of the lower mandible. Females, like those of several other closely related Diglossa, are largely olive-brown above with warmer-colored underparts, and also have a less noticeable pale base to the bill. Much of its breeding biology and its population status are unknown.

This map is based on the maps available from the NatureServe InfoNatura website. The data for these maps are provided by NatureServe in collaboration with Robert Ridgely, James Zook, The Nature Conservancy - Migratory Bird Program, Conservation International - CABS, World Wildlife Fund - US, and Environment Canada - WILDSPACE.